A-811, G-901 Motion Controllers

April 28, 2022
Multi-Axis and Single-Axis Motion Controllers with EtherCat Connectivity

High performance motion control is a key requirement for many high-tech industries, from laser processing, medical device manufacturing, bio-genomics, aerospace, photonics alignment, and semiconductor manufacturing, to name a few. High precision nano positioning stages, designed for high-duty-cycle operation are crucial here, but the positioning hardware also requires state-of-the-art motion controllers to extract the maximum of performance. Precision motion systems leader PI recently expanded its motion control families with new ACS-hardware-based closed-loop controllers, providing EtherCat® connectivity.

A-811, Compact 1-Axis Controller

Equipped with ultra-low noise PWM drives, the A-811 single axis controller integrates a closed loop servo controller with drive in a compact case.It can handle voice coil drives, DC motors, and brushless 3-phase motors, as well as high-resolution incremental encoders with sine/cosine output and absolute measuring encoders based on BiSS-C protocol. The ultra-low noise PWM drives allow for high-resolution motion with nanometer resolution.

G-901, Multi-Axis Industrial Motion Controller Family for High Power Applications

The new G-901 controllers are also based on ACS hardware and EtherCat® connectivity, providing up to 1500W output per axis. Many advanced control features, such as STO (safe torque off), Servoboost, NanoPWM, and special algorithms for gantry control, laser triggering, and high-speed contouring, are available and improve the throughput and performance in applications from laser machining to 3D printing.

Why EtherCat® Standard?
EhterCat® is an open standard that allows easy extension and scaling of existing control hardware with additional controller modules or 3rd party peripherals such as I/O, cameras, sensors, etc. Unlike with proprietary communication standards, EtherCat® -based controllers provide their users with much higher flexibility and significantly lower costs in the long run.

Related Glossary Terms

  • laser machining

    laser machining

    Intensified, pulsed beams of light generated by lasers—typically carbon dioxide or neodium-doped yttrium aluminum garnet (Nd:YAG)—that drill, weld, engrave, mark, slit and caseharden. Usually under CNC, often at both high cutting rates (100 linear in./sec.) and high power (5kW or more). Lasers also are used in conjunction with in-process quality-control monitoring systems allowing measuring accuracies of 0.00001".